[Deano27]

hiya, every spring i apply season long pathclear weedkiller to my block paving driveway and yard area.  this solves the problem and prevents weeds growing up through the cracks until near the end of summer when  the weeds return again.  is anyone aware of a product that provides permanent protection from weeds so that i won't need to reapply the weedkiller again every year?

cheers

dean

[JayG]

Any herbicide that deadly and persistent would be banned, certainly for domestic use!   

[DavidT]

Yep, concrete.

[Slowgrind]

A spoonfull of salt right in the heart of a weed usually does it for the season.